The A26N1-30-10-84 is a NEMA Size 1, 3-pole, non-reversing contactor rated for 27 A continuous at 600 V, with a 120 VAC coil. The NEMA Size 1 frame means it handles motor loads up to 27 A in AC-3 duty — typical for a 7.5–10 HP motor at 460 V — and the 600 V rated insulation gives headroom for 480 V or 600 V line feeds. The included 1 N.O. auxiliary contact block provides a feedback or interlock signal without adding a separate stack.
The 27 A rating is the continuous current at 600 V — for motor loads, derate to the AC-3 switching current, which for NEMA Size 1 is typically the same 27 A. The 120 VAC coil draws about 0.2–0.3 A sealed; verify the control transformer or PLC relay output can supply the inrush (about 5–7 times sealed current) without voltage sag. The 3-pole configuration switches all three phases; for single-phase or DC loads, only two poles are used and the third remains open.